Merge pull request !5387 from lixiachen/testcase_epoch

Merge pull request !4204 from fary86/adapt_primitive_dynamic_shape

Merge pull request !5625 from wenchunjiang/fix_memory_leak

Merge pull request !5604 from yeyunpeng2020/master_caffe_slice

Merge pull request !5638 from 张清华/master

Merge pull request !5641 from zhangbuxue/check_user_define_bprop_when_there_is_parameter_in_nested_network

Merge pull request !5085 from lixiachen/cache_hostname

Merge pull request !4998 from JesseKLee/mem_pool

Merge pull request !5644 from kisnwang/async-run-graph

Merge pull request !5458 from danishnxt/GPU_two

Merge pull request !5639 from wangmin0104/master

Merge pull request !5587 from caojian05/ms_googlenet_readme_update

Merge pull request !5632 from chenhaozhe/add-global-norm-to-bert

Merge pull request !5190 from anthonyaje/gpu_queue_size

Merge pull request !5629 from zhengjun10/master

Merge pull request !5626 from wangmin0104/master

Merge pull request !5549 from jianghui58/master

Merge pull request !5597 from liuyang/MT

Merge pull request !5616 from hewei/fix_tensor_from_numpy2

fix space_to_batch bug

Merge pull request !5633 from pengyongrong/stack

Merge pull request !5594 from Simson/push-to-opensource

Merge pull request !5624 from heleiwang/gnn_perf

Merge pull request !5628 from guozhijian/fix_tinybert_err

Merge pull request !5622 from baihuawei/0901

2. erase kAttrChildGraph after finish using

Merge pull request !5598 from kisnwang/async-run-graph